What the Romans called the Gaels (Irish) who raided the coasts of Britain and Caledonia way back when. Some of these people settled in the north, intermarrying with the local Picts and Britons and joining their own clans together as a kingdom, which they called Alba. Nowadays, these people are called Scots, but back then, "Scot" was synonymous with "Gael", and applied to both Scots and Irish.